Elements of Pure Economics was one of the most influential works in the history of economics, and the single most important contribution to the marginal revolution. Walras' theory of general equilibrium remains one of the cornerstones of economic theory more than 100 years after it was first published.

In his fourth edition of Éléménts d'économie politique pure (1900), León Walras introduced the device of written pledges to eliminate path dependency: sellers of products and services write out commitments to supply certain quantities at suggested prices with no commodities actually produced and supplied until a set of prices is found at which supply and demand are equal simultaneously in every market. This brought about very serious alterations to the character of the book. Unfortunately, these changes resulted in an incomplete, internally contradictory, and occasionally incoherent text. This translation, therefore, by two leading scholars of León Walras' work, Donald A. Walker and Jan van Daal, revisits the third edition of this seminal work, including Walras' brilliant explanation of his comprehensive model, with all its richness derived from reality. Growing research into Walras' work indicates that it was this third edition that contained his best theoretical research and a translation of this edition of the book is now a necessity.

Elements of Pure Economics was one of the most influential works in the history of economics, and the single most important contribution to the marginal revolution. Walras' theory of general equilibrium remains one of the cornerstones of economic theory more than 100 years after it was first published.

The authors examine Walras' general equilibrium models, tracing their development through his major work Elements of Pure Economics, and also placing them in the broader context of his design for optimal economic order.

A timeless classic of economic theory that remains fascinating and pertinent today, this is Frank Knight's famous explanation of why perfect competition cannot eliminate profits, the important differences between "risk" and "uncertainty," and the vital role of the entrepreneur in profitmaking. Based on Knight's PhD dissertation, this 1921 work, balancing theory with fact to come to stunning insights, is a distinct pleasure to read. FRANK H. KNIGHT (1885-1972) is considered by some the greatest American scholar of economics of the 20th century. An economics professor at the University of Chicago from 1927 until 1955, he was one of the founders of the Chicago school of economics, which influenced Milton Friedman and George Stigler.

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